Alesia Whitt MSN, APN, AGACNP-BC


Alesia is nationally certified as an Adult Gerontology Acute Care Nurse Practitioner by the American Nurses Credentialing Center.  She received her Bachelor of Science in Nursing at Illinois Wesleyan University and her Master of Science in Nursing from the University of Illinois at Chicago.

Office Locations:

Office Hours:

  • Monday: Grayslake 7am – 4pm
  • Tuesday: Libertyville 8am – 4pm
  • Wednesday: No office hours
  • Thursday: Libertyville 7am – 4pm
  • Friday: Libertyville 8am – 4pm

Contact Information:

Molly Uyenishi PA-C, MCMS


Molly is nationally certified as a physician assistant by the National Commission on Certification of Physician Assistants. She received her Bachelor of Arts in Biology from Colorado College in Colorado Springs, Colorado and her Master of Clinical Medical Science in Physician Assistant Studies from Barry University in Miami, Florida. While at Colorado College, Molly was a Division I student-athlete competing on the Women’s Soccer team. She earned recognition from Conference USA on both the Academic Honor Roll as well as First Team All-Conference. Molly went on to play soccer professionally for QBIK in Karlstad, Sweden.

Combining her passion for soccer and medicine, she chose Orthopaedic Surgery as her specialty. She works with Dr. Chams in both the clinical and surgical setting, as well as on the field with the Chicago Red Stars of the National Women’s Soccer League and the Eclipse Select Soccer Club, one of the elite youth clubs in the Chicago area.

Office Locations:

Office Hours:

  • Monday: Grayslake 7am – 11am (Surgery PM Hours)
  • Tuesday: Libertyville 8am – 4pm
  • Wednesday: Libertyville 8am-11:30am
  • Thursday: Libertyville 7am – 11:30am (Surgery PM Hours)
  • Friday: No office Hours

Contact Information:

Dan Henrichs, MS, ATC, OTC


Dan Henrichs is a Certified Athletic Trainer and Certified Orthopedic Tech. Dan has been employed with IBJI and Dr. Chams since 2013. He received his Bachelors of Science in Athletic Training and his Masters of Science in Exercise Science from Western Illinois University. Dan has almost 20 years of sports medicine experience from working in physical therapy clinics to traveling with US Soccer Youth National Teams and is also currently employed by Athletico Physical Therapy providing athletic training services to Carmel Catholic High School. Dan is married to Katie Tilton and they have three children: Declan (6 yrs old), Cecilia (4yrs old), and Sean (3 yrs old).

Clinical and Surgical Responsibilities:

  • Takes patients medical histories
  • Performs physical examinations
  • Provides surgical assistance in the operating room
  • Performs wound care checks
  • Provides preoperative and postoperative education

Office Locations:

Office Hours:

  • Monday: Grayslake 7am – 12pm
  • Tuesday: Libertyville 8am – 11am
  • Wednesday: No office hours
  • Thursday: Libertyville 8am – 11am
  • Friday: No Office Hours

Contact Information:

Kyle Sullivan CST,CSFA


Kyle is a Nationally Certified Surgical Technologist and Nationally Certified Surgical First Assistant with 13 years’ experience in healthcare and 9 years’ experience in the Operating room. Kyle began his career as an EMT-B working with a private ambulance service in Illinois. After completion of the Surgical Technology Program at the College of Lake County, he joined Northwestern Lake Forest Hospital working as a Surgical Technologist.

Since joining Dr. Chams and Illinois Bone and Joint Institute, Kyle advanced his training in 2013 by becoming nationally board certified in surgical technology and surgical assisting. Kyle works closely with Dr. Chams assisting him within the operating room. Kyle holds active memberships in the Association of Surgical Technologists and the Association of Surgical Assistants.

Kyle is married (Lindsey) and has three boys. He enjoys spending time with his family, boating and Heavy Metal Music.

Surgical Responsibilities:

  • Performs history and physical assessment
  • Assists with aspirations and injections
  • Provides preoperative and postoperative education
  • First Assistant in surgery

Surgical Location/Privileges:

  • Northwestern Lake Forest
    1475 E. Belvidere Rd Grayslake IL
  • Northestern Lake Forest
    660 N Westmoreland Rd Lake Forest IL 60045
  • Hawthorne Surgery Center
    240 Center Dr Vernon Hills IL 60048
  • Advocate Condell
    801 S Milwaukee Ave Libertyville, IL 60048

Contact Information:

Office (847) 247-4000

Alyssa Ribaudo, MS, PA-C



Alyssa is a nationally certified physician assistant by the National Commission on Certification of Physician Assistants. In 2015, she graduated with a Bachelor’s degree in Kinesiology from the University of Illinois, Urbana-Champaign. In 2019. Alyssa then graduated with a Master’s degree in Physician Assistant Studies from Rosalind Franklin University.

Office Location:

Office Hours

  • Monday: TBD
  • Tuesday: 8:00am- 4:00pm
  • Wednesday: 8:00am- 4:00pm
  • Thursday: 7:00am – 4:00pm
  • Friday: Surgery

Contact Information

Stephanie Mejia, CCMA


Stephanie joined the medical staff of Dr. Chams in 2013 .She is a certified medical assistant and serves as the coordinator for clinical communication.Stephanie coordinates the scheduling / approval of viscosupplements,  diagnostic imaging, testing, disability forms, and peer to peer reviews for insurance.Dr Chams recognizes the importance of patients receiving test results as soon as possible.Stephanie assists in making sure these results are provided to the patient within 24-48 hours of completion.

Contact Information:

Tracy Knollenberg, CCMA


Tracy became the surgical office coordinator for Dr. Chams in 2006 and is a certified medical assistant. She maintains the surgeons schedule at Hawthorn Surgery Center, Northwestern Grayslake and Northwestern Lake Forest Hospital.During the scheduling of your procedure, she will assist in the smooth transition from pre-operative to postoperative care by providing each patient with the information and instructions necessary to ensure a successful surgery.

Contact Information:

Alesia Whitt MSN, APN, AGACNP-BC


Alesia is nationally certified as an Adult Gerontology Acute Care Nurse Practitioner by the American Nurses Credentialing Center.  She received her Bachelor of Science in Nursing at Illinois Wesleyan University and her Master of Science in Nursing from the University of Illinois at Chicago.

Office Location:

Office Hours:

  • Monday: Grayslake 7am – 4pm
  • Tuesday: Libertyville 8am – 4pm
  • Wednesday: No office hours
  • Thursday: Libertyville 7am – 4pm
  • Friday: Libertyville 8am – 4pm

Contact Information:

Molly Uyenishi PA-C, MCMS


Molly is nationally certified as a physician assistant by the National Commission on Certification of Physician Assistants. She received her Bachelor of Arts in Biology from Colorado College in Colorado Springs, Colorado and her Master of Clinical Medical Science in Physician Assistant Studies from Barry University in Miami, Florida. While at Colorado College, Molly was a Division I student-athlete competing on the Women’s Soccer team. She earned recognition from Conference USA on both the Academic Honor Roll as well as First Team All-Conference. Molly went on to play soccer professionally for QBIK in Karlstad, Sweden.

Combining her passion for soccer and medicine, she chose Orthopaedic Surgery as her specialty. She works with Dr. Chams in both the clinical and surgical setting, as well as on the field with the Chicago Red Stars of the National Women’s Soccer League and the Eclipse Select Soccer Club, one of the elite youth clubs in the Chicago area.

Office Location:

Office Hours:

  • Monday: Grayslake 7am – 11am (Surgery PM Hours)
  • Tuesday: Libertyville 8am – 4pm
  • Wednesday: Libertyville 8am-11:30am
  • Thursday: Libertyville 7am – 11:30am (Surgery PM Hours)
  • Friday: No office Hours

Contact Information:

Dan Henrichs, MS, ATC, OTC


Dan Henrichs is a Certified Athletic Trainer and Certified Orthopedic Tech. Dan has been employed with IBJI and Dr. Chams since 2013. He received his Bachelors of Science in Athletic Training and his Masters of Science in Exercise Science from Western Illinois University. Dan has almost 20 years of sports medicine experience from working in physical therapy clinics to traveling with US Soccer Youth National Teams and is also currently employed by Athletico Physical Therapy providing athletic training services to Carmel Catholic High School. Dan is married to Katie Tilton and they have three children: Declan (6 yrs old), Cecilia (4yrs old), and Sean (3 yrs old).

Clinical and Surgical Responsibilities:

  • Takes patients medical histories
  • Performs physical examinations
  • Provides surgical assistance in the operating room
  • Performs wound care checks
  • Provides preoperative and postoperative education

Office Location:

Office Hours:

  • Monday: Grayslake 7am – 12pm
  • Tuesday: Libertyville 8am – 11am
  • Wednesday: No office hours
  • Thursday: Libertyville 8am – 11am
  • Friday: No Office Hours

Contact Information:

Kyle Sullivan CST,CSFA


Kyle is a Nationally Certified Surgical Technologist and Nationally Certified Surgical First Assistant with 13 years’ experience in healthcare and 9 years’ experience in the Operating room. Kyle began his career as an EMT-B working with a private ambulance service in Illinois. After completion of the Surgical Technology Program at the College of Lake County, he joined Northwestern Lake Forest Hospital working as a Surgical Technologist.

Since joining Dr. Chams and Illinois Bone and Joint Institute, Kyle advanced his training in 2013 by becoming nationally board certified in surgical technology and surgical assisting. Kyle works closely with Dr. Chams assisting him within the operating room. Kyle holds active memberships in the Association of Surgical Technologists and the Association of Surgical Assistants.

Kyle is married (Lindsey) and has three boys. He enjoys spending time with his family, boating and Heavy Metal Music.

Surgical Responsibilities:

  • Performs history and physical assessment
  • Assists with aspirations and injections
  • Provides preoperative and postoperative education
  • First Assistant in surgery

Surgical Location/Privileges:

  • Northwestern Lake Forest
    1475 E. Belvidere Rd Grayslake IL
  • Northestern Lake Forest
    660 N Westmoreland Rd Lake Forest IL 60045
  • Hawthorne Surgery Center
    240 Center Dr Vernon Hills IL 60048
  • Advocate Condell
    801 S Milwaukee Ave Libertyville, IL 60048

Contact Information:

Office (847) 247-4000

Alyssa Ribaudo, MS, PA-C



Alyssa is a nationally certified physician assistant by the National Commission on Certification of Physician Assistants. In 2015, she graduated with a Bachelor’s degree in Kinesiology from the University of Illinois, Urbana-Champaign. In 2019. Alyssa then graduated with a Master’s degree in Physician Assistant Studies from Rosalind Franklin University.

Office Location:

Office Hours

  • Monday: TBD
  • Tuesday: 8:00am- 4:00pm
  • Wednesday: 8:00am- 4:00pm
  • Thursday: 7:00am – 4:00pm
  • Friday: Surgery

Contact Information

Tracy Knollenberg, CCMA


Tracy became the surgical office coordinator for Dr. Chams in 2006 and is a certified medical assistant. She maintains the surgeons schedule at Hawthorn Surgery Center, Northwestern Grayslake and Northwestern Lake Forest Hospital.During the scheduling of your procedure, she will assist in the smooth transition from pre-operative to postoperative care by providing each patient with the information and instructions necessary to ensure a successful surgery.

Contact Information: